Operation; Front Panel Display & Controls; General Operation - Bacharach 3015-4286 Installation & Operating Instructions Manual

Operation

Front Panel Display & Controls
Keypad
Use these buttons to:
1) Enter function mode and
then move arrow (>) on
screen to the desired function
2) Scroll through data
3) Change a function's value

General Operation

Once the AGM-SZ has been installed, set up, and powered ON, the monitor will make measurements in the
area being sampled for ammonia gas without further operator intervention. The results of those measurements
are shown on the front panel display.
MEASURE 00485pk
45ppm R717
In the example shown above, MEASURE indicates that the AGM-SZ is actively monitoring for refrigerant gas,
and that currently 45 ppm of R-717 (ammonia gas) is being detected. This display also indicates that a peak
measurement of 485 ppm has been made.
An operator can reset the peak value to zero by pressing the ENTER button.
A log of up to 200 previous measurements can be viewed using the PPM LOG function (Page 15).
If the detected gas level exceeds the preset Leak, Spill, or Evacuate alarm point, then the monitor responds by
turning ON the front panel ALARM (red) light and energizing the corresponding alarm relay. If the internal
audible alarm is turned ON, it too will activate (AUDALRM page 16). Optional external alarm devices can be
connected to the alarm relays to alert personnel that a Leak, Spill, or Evacuate alarm condition has occurred
(Page 10). Pressing the front panel SILENCE button will acknowledge an alarm and turn OFF all alarm
indicators with the exception of the front panel ALARM light. The alarm circuit will reactivate, however, if the
alarm condition is not cleared within the time period set by the SILENCE function (Page 17). The ALARM light
will turn OFF after the detected gas level goes below the lowest alarm point and after the SILENCE button is
pressed.
Instruction 3015-4286
MONITOR ON SYSTEM FAULT
Light (Green) Light (Yellow)
1) Flashes Flashes when
during warm-up any one or more
of the faults listed
2) Lights steady
on Page 19 occur
during normal
operation
Display
Screen
ENTER
Press this button to:
1) Clear peak reading
2) Save a function
screen's displayed value
SILENCE / QUIT
Press this button to:
1) Acknowledge a
system fault or gas
alarm by turning OFF
the internal audible
alarm and de-energizing
ALARM Light
the corresponding
(Red)
fault/alarm relay
Flashes when
2) Return to the previous
the detected gas
screen without saving
level exceeds
data when in the
any of three
function mode
preset alarm
points
13